JP2024032989A - How to renew fire alarm equipment - Google Patents

Abstract

An object of the present invention is to easily set sensor addresses and interlock control information when renewing receivers and fire detectors of fire alarm equipment. After updating the receiver 10 to a new receiver 100, the transmission time is measured by transmitting and receiving a test signal specifying the address of the fire detector 14, and first correspondence information that is paired with the address is stored. , after updating the fire detector 14 to the new fire detector 114, the transmission time is measured by sending and receiving a test signal specifying the serial number of the new fire detector 114, and the second correspondence information that is paired with the serial number is obtained. The third correspondence information, which is a pair of address and serial number, is generated by determining whether the transmission times of the first correspondence information and the second correspondence information match. After updating the transmission line 12 to the new transmission line, the new receiver 100 transmits an address setting signal specifying the serial number of the new fire detector 114 from the third response information, and updates the new fire detector 114 to the existing fire alarm. Set the same address as the sensor 14. [Selection diagram] Figure 1

Description

The present invention relates to a method for renewing fire alarm equipment by replacing a receiver and fire detector with a new receiver and fire detector.

Conventionally, in fire alarm equipment known as type R, a fire detector with a unique address is connected to the transmission line led out from the receiver, and the fire detector that detects a fire issues a fire interrupt. By transmitting a signal, it receives a fire interrupt signal and outputs a fire alarm, and also sends a search command to the transmission line to identify the address of the fire detector that triggered the alarm and display the location of the fire. Fire data is collected and monitored from fire detectors that identify fire alarms.

In addition, the receiver has pre-stored interlock control information for interlocking disaster prevention equipment such as fire doors and smoke prevention equipment in accordance with the sensor address, and can know the address of the fire detector that detected the fire. This function enables appropriate evacuation guidance and fire extinguishing activities by specifying the interlocking device from the interlocking information and performing interlocking control information, making it an essential function especially for fire monitoring of large-scale facilities.

JP2017-068523A

By the way, even with conventional fire alarm equipment known as Type R, if the receiver or fire detector approaches the end of its useful life, the receiver or fire detector can be replaced with a new receiver without changing the transmission path. (hereinafter referred to as the "new receiver") and a new fire detector (hereinafter referred to as the "new fire detector") will require renewal work.

However, when renewing conventional R-type fire alarm equipment, after all existing receivers and fire detectors are replaced with new receivers and new fire detectors, addresses are set for the new fire detectors. Since the new fire detector has not been installed, use an address setting device on-site to set the address in order from the receiver side, and then check the relationship between the sensor installation location and address on the receiver side. For example, if you are creating a new interlock control table by specifying the fire door or smoke prevention device to be linked, even if it is a renovation project, basically if you are installing a new fire alarm system. There is a problem that it takes the same amount of effort and time, and the cost also increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for renewing fire alarm equipment that allows easy setting of sensor addresses and interlock control information when renewing receivers and fire detectors.

(How to renew fire alarm equipment)
In the present invention, a receiver and a fire detector with a unique address are connected via a transmission line, and the receiver, fire detector, and transmission line are replaced with a new receiver, a new fire detector, and a new transmission line. A method for renewing fire alarm equipment, comprising:
After replacing the receiver with a new receiver, the new receiver sends a communication test signal specifying an address to the transmission line, receives a response signal from the fire detector with an address match, and completes the first transmission period. and generating and storing first correspondence information that is a pair of the address and the first transmission time;
After replacing the fire detector with a new fire detector, the new receiver sends a communication test signal specifying the serial number of the new fire detector to the transmission line, and the new fire detector whose serial number matches receiving the response signal and measuring the second transmission time, and generating and storing second correspondence information that is a pair of the serial number and the second transmission time;
Based on the first correspondence information and the second correspondence information, generate and store third correspondence information consisting of a pair of address and serial number that match the first transmission time and the second transmission time;
After replacing the transmission line with a new transmission line, the new receiver sends an address setting signal to the new transmission line, with the serial number of each set as the destination and the address as setting information, based on the third correspondence information, and the serial Set the received address as setting information on the new fire detector for which a number match has been obtained.
It is characterized by

(Average value of transmission time)
The receiver and the new receiver respectively transmit the communication test signal a plurality of times and store the average values of the measured transmission times as the first transmission time and the second transmission time.

(Determination of address duplication)
If there are multiple sets generated with different addresses for the same serial number, the new receiver determines that the addresses are duplicated and broadcasts the addresses of each set.

(Discrepancy between first transmission time and second transmission time)
The new receiver broadcasts the address if there is no second transmission time that is paired with a serial number that matches the first transmission time that is paired with the address.

(Re-judgment by rounding when transmission times do not match)
If the new receiver does not have a serial number that matches the first transmission time paired with the address and a second transmission time paired with the address, the lowest time value of the first transmission time and the second transmission time is rounded. The time match is determined again based on the value.

(Serial number used to measure transmission time)
The new receiver stores the serial number of the new fire detector manufactured during a predetermined period including the manufacturing period of the new fire detector as the serial number of the new fire detector used to measure the second transmission time, and the serial number of the new fire detector used for measuring the second transmission time is stored. A communication test signal with a set number is sent to the transmission line, and when a response signal is received from the new fire detector, the second transmission time is measured and the set of serial number and second transmission time is used as second correspondence information. to be memorized.

(Additional function of new fire detector)
The new fire detector is
When it receives a communication test signal specifying its own serial number from the transmission path, it sends a response signal to the transmission path,
When receiving an address setting signal specifying its own serial number from the transmission path, the address included in the address setting signal is set as the own address.

(Porting receiver address related information)
The information related to the address of the fire detector stored in the receiver before replacement is read out and stored in the new receiver.

(Porting sensor address information and interlocking control information)
The information related to the address of the fire detector is the detector address information used to call the fire detector stored in the receiver before replacement, and the interlocking control information that sets the correspondence between the detector address and the interlocking device. It is.

(basic effect)
In the present invention, a receiver and a fire detector with a unique address are connected via a transmission line, and the receiver, fire detector, and transmission line are replaced with a new receiver, a new fire detector, and a new transmission line. A method for renewing fire alarm equipment, in which after replacing the receiver with a new receiver, the new receiver sends a communication test signal with an address specified to the transmission line, and from the fire detector where an address match is obtained. The first response signal is received and the first transmission time is measured, and the first correspondence information, which is a pair of the address and the first transmission time, is generated and stored, and after the fire detector is replaced with a new one, the new fire detector is A communication test signal specifying the serial number of the new fire detector is sent from the receiver to the transmission line, a response signal from the new fire detector whose serial number matches is received, and a second transmission time is measured. Generate and store second correspondence information that is a set of a serial number and a second transmission time, and based on the first correspondence information and second correspondence information, select an address and a serial number that match the first transmission time and the second transmission time. After generating and storing the third correspondence information consisting of a set of numbers and replacing the transmission line with a new transmission line, the new receiver sets each set of serial numbers as the destination and sets the address based on the third correspondence information. In order to send an address setting signal as setting information to the new transmission line and set the address received as the setting information on the new fire detector whose serial number matches, the receiver of the fire alarm equipment, the fire detector In the case of renewal work in which the transmission line is replaced with a new receiver, new fire detector, and new transmission line, even if the transmission line is replaced with a new transmission line, the replacement that is connected to the same position of the new transmission line Since the transmission time of the previous fire detector and the transmission time of the new fire detector after replacement are basically the same, the address of the fire detector before replacement and the serial number of the fire detector after replacement. By associating (serial numbers) based on the same transmission time and setting the address to the new fire detector according to instructions from the new receiver, the new address of the fire detector connected to the transmission line before replacement is transmitted. It can be set as is to a new fire detector connected to the same location on the road, and the address can be set on the replaced new fire detector by using an address setting device, etc. while checking the correspondence between the installation location and address. No work is required, and the work of setting sensor addresses in fire alarm equipment renewal work becomes simple and easy, and the work burden and cost can be reduced.

(Effect due to average transmission time)
In addition, the receiver and the new receiver each transmit the communication test signal multiple times and store the average value of the measured transmission time as the first transmission time and second transmission time, so the transmission time measurement It is possible to obtain highly accurate transmission time measurement results by reducing the effects of noise and variations caused by

(Effects of determining address duplication)
In addition, if there are multiple sets of the same serial number with different addresses, the new receiver will determine that the addresses are duplicates and broadcast the addresses of each set. Regarding the set address, after completing the address setting of the new detector using the new receiver, check the installation location of the new fire detector corresponding to the unset address and manually set the address using an address setting device etc. Can be done. In addition, since the proportion of unset addresses to all addresses is sufficiently low, the number of new fire detectors that require manual address setting will not increase so much, and the work burden of address setting will be significantly reduced. can.

(Effect due to mismatch between first transmission time and second transmission time)
In addition, the new receiver broadcasts the address if there is no serial number that matches the first transmission time that is paired with the address, and the second transmission time that is paired with the address, so as in the case of address duplication, It is possible to manually set the address after setting the address of the new sensor using the new receiver, and since the ratio of unset addresses due to transmission time mismatch to the total addresses is sufficiently low, it is not necessary to set the address manually. The number of new fire detectors to be installed will not increase significantly, and the workload of setting addresses can be significantly reduced.

(Effect of re-judgment by rounding when transmission times do not match)
Additionally, if there is no second transmission time that is paired with a serial number that matches the first transmission time that is paired with the address, the new receiver uses the lowest time value of the first transmission time and second transmission time. Since the time matching is determined again after rounding, for example, by rounding off the restart time values of the first transmission time and second transmission time, the times of the first transmission time and second transmission time can be calculated. By increasing the number of new fire detectors that match and can be set with addresses using new receivers, the workload of setting addresses can be further reduced.

(Effect of serial number used to measure transmission time)
In addition, the new receiver stores the serial number of the new fire detector manufactured during a predetermined period including the manufacturing period of the new fire detector as the serial number of the new fire detector used to measure the second transmission time. , transmits a communication test signal with a serial number set to the transmission line, measures the second transmission time when a response signal is received from the new fire detector, and calculates the set of the serial number and second transmission time to the second transmission line. Because it is stored in the correspondence information, you do not have to check the serial numbers of new fire detectors used for renewal work one by one. By transmitting a communication test signal with a serial number set to , it is possible to easily measure the second transmission time between the new fire detector and the new fire detector actually connected to the transmission line.

(Effects due to the additional functions of the new fire detector)
In addition, when the new receiver receives a communication test signal specifying its own serial number from the transmission line, it transmits a response signal to the transmission line, and receives an address setting signal specifying its own serial number from the transmission line. In this case, the address included in the address setting signal is set as the self address, so even if the new fire detector does not have an address set, it will receive the address setting signal specifying the serial number from the new receiver. In addition, it is possible to reliably set the address included as the setting information without any manual address setting work.

(Effects of porting receiver address-related information)
In addition, information related to the address of the fire detector stored in the receiver before replacement is added to the new receiver, such as the sensor address used to call the fire detector stored in the receiver before replacement. Since the interlock control information that sets the correspondence between information and sensor addresses and interlocking devices is read and stored, a new fire detector connected to the transmission line will have the same address as the fire detector before replacement. The address information and interlock control information for sensor calling that was used in the receiver before replacement can be used as is, and it is easy to copy the address information and interlock control information to the new receiver. It can be done with some work.

Explanatory diagram showing the outline of the renewal procedure for fire alarm equipment Flowchart showing the procedure for renewing fire alarm equipment Explanatory diagram showing the generation of first to third response information due to renewal of fire alarm equipment Block diagram showing the functional configuration of fire alarm equipment when replacing the existing fire alarm equipment and receiver with a new receiver. Block diagram showing the functional configuration of fire alarm equipment in which the fire detector was replaced with a new fire detector following the receiver. A block diagram showing the functional configuration of the new fire detector that supports address settings using the new receiver.

[Outline of fire alarm equipment renewal procedure]
FIG. 1 is an explanatory diagram showing an outline of the renewal procedure for fire alarm equipment. FIG. 1A shows an R-type fire alarm system before renewal, in which a fire detector 14 with a transmission function is connected to a transmission line 12 led out from a receiver 10. A unique address is set for the fire detector 14, and for example, 255 addresses from 1 to 255 are used.

The receiver 10 repeatedly transmits the batch AD conversion command every transmission period of the polling command to all addresses. When the fire detector 14 receives the batch AD conversion command from the receiver 10, it samples the detected analog detection data such as smoke concentration and temperature, and compares it with a predetermined fire level.

When the analog detection data sampled by the fire detector 14 exceeds the fire level, a fire interrupt signal is transmitted to the receiver 10 at the timing of response to the polling command. This fire interrupt signal sends a signal that is not normally used and has a response bit string of all 1s.

Upon receiving the fire interrupt signal from the fire detector 14, the receiver 10 issues a group search command, receives an interrupt response from the group that includes the fire detector 14 that detected the fire, and determines the group; Next, the address of each fire detector 14 that detected a fire is recognized by polling each fire detector included in the determined group by sequentially specifying the address and receiving a fire response such as fire alarm data. Then, a fire alarm will be activated to indicate the location of the fire.

When the receiver 10 and fire detector 14 of the existing R-type fire alarm equipment are nearing the end of their useful life, the receiver 10 and fire detector 14 should be replaced as shown in FIGS. 1(B) and 1(C). Renewal work will be carried out to replace the receiver with a new receiver 100 and a new fire detector 114.

In the method for renewing fire alarm equipment according to this embodiment, first, as shown in FIG. The new receiver 100 is brought into an operating state in which it can send and receive signals with specified addresses to and from the existing fire detector 14.

In the middle of the renewal shown in FIG. 1(B), the new receiver 100 transmits a communication test signal specifying an address, and receives a response signal from the fire detector 14 for which an address match has been obtained. The first transmission time is measured, and first correspondence information that is a pair of the address and the first transmission time is generated and stored.

Subsequently, as shown in FIG. 1(C), after replacing the existing fire detector 14 with a new fire detector 114, a communication test signal specifying the serial number of the new fire detector 114 is sent from the new receiver 100. and receives a response signal from the new fire detector 114 whose serial number matches the serial number, measures the second transmission time, and generates second correspondence information that is a pair of the serial number and the second transmission time. memorize it.

Next, the new receiver 100 generates third correspondence information consisting of a pair of address and serial number that match the first transmission time and the second transmission time, based on the stored first correspondence information and second correspondence information. and memorize it.

Next, the new receiver 100 sends an address setting signal with each set of serial numbers as the destination and the address as setting information based on the third correspondence information consisting of a set of an address and a serial number, and determines whether the serial numbers match. An address setting operation is performed to set the received address as setting information in the new fire detector 114 for which the information has been obtained.

When the new receiver 100 completes the address setting for the new fire detector 114, the renewal work of the fire alarm equipment is completed, and fire monitoring by the renewed fire alarm equipment becomes possible.

[Details of fire alarm equipment renewal procedure]
Figure 2 is a flowchart showing the procedure for renewing fire alarm equipment, Figure 3 is an explanatory diagram showing the generation of the first to third response information by renewing fire alarm equipment, and Figure 4 is a flowchart showing the procedure for renewing fire alarm equipment. A block diagram showing the functional configuration of fire alarm equipment when replacing with a new receiver. Figure 5 is a block diagram showing the functional configuration of fire alarm equipment when the fire detector is replaced with a new fire detector following the receiver. It is. Note that the double-framed blocks in the flowchart of FIG. 2 indicate manual tasks and operations.

(Measurement of first transmission time of fire detector using new receiver)
In the renewal procedure shown in FIG. 2, first in step S1, as shown in FIGS. 1(A) and (B), the receiver 10 of the existing fire alarm equipment is replaced with a new receiver 100, and then in step SS2. A communication test signal specifying an address is transmitted from the new receiver 100 to the transmission line 12, a response signal from the existing fire detector 14 with which the address matches is received, and the first transmission time is measured.

The measurement of the first transmission time for each existing fire detector 14 by this new receiver 100 is performed by transmitting the communication test signal multiple times and storing the average value of the measured transmission time as the first transmission time. To obtain a measurement result of the first transmission time with high accuracy by reducing the influence of variations and noise caused by the measurement of the first transmission time.

Next, in step S3, the new receiver 100 generates and stores first correspondence information, which is a pair of address and first transmission time, based on the first transmission time measured in step S2.

FIG. 3 shows the first correspondence information 32 generated by the processing in steps S2 and S3 of FIG. The first correspondence information 32 corresponds to the first transmission times FT1 to FT255 measured to addresses 001 to 255 set in the fire detector 14.

The first transmission time from transmitting the communication test signal from the new receiver 100 to the fire detector 14 to receiving the response signal is the transmission time from the new receiver 100 on the transmission line 12 to which the fire detector 14 is connected. The transmission time depends on the distance, and the transmission time changes approximately in proportion to the transmission distance. Furthermore, in order to measure the first transmission time that changes depending on the connection position of the fire detector 14 to the transmission path 12, that is, the difference in transmission distance, it is desirable to measure the transmission time on the order of microseconds, for example.

(Receiver function)
Here, with reference to FIG. 4, the functions of the new receiver replaced with the receiver of the existing fire alarm equipment will be explained as follows.

FIG. 4(A) shows the functional configuration of the receiver 10 in the existing fire alarm equipment. As shown in FIG. 4(A), the receiver 10 includes a receiver control section 16, a transmission section 18, an operation display section 20, an alarm section 22, a transfer section 24, and a storage section in which interlocking control information 28 is stored. 26 are provided.

The receiver control unit 16 of the receiver 10 is composed of a computer circuit including a CPU, memory, and various input/output ports, and performs predetermined receiver control by executing a program.

The downstream signal from the receiver 10 to the fire detector 14 is transmitted in voltage mode. This voltage mode signal is transmitted as a voltage pulse that changes the line voltage of the transmission line 12 between, for example, 18 volts and 30 volts.

On the other hand, the upstream signal from the fire detector 14 is transmitted in current mode. In this current mode, a signal current is passed through the transmission line 12 at the timing of bit 1 of the transmission data, and an upstream signal is transmitted to the receiver 10 as a so-called current pulse train.

As described above, the receiver control unit 16 of the receiver 10 performs reception control by repeatedly transmitting a batch AD conversion command for each polling command transmission cycle for all addresses, and sends analog data such as smoke concentration and temperature to the fire detector 14. Detection data is sampled and compared with a predetermined fire level.

When the fire detector 14 determines that a fire has occurred, a fire interrupt signal is transmitted to the receiver 10 at the timing of response to the polling command, and upon receiving the fire interrupt signal, the receiver 10 issues a group search command. The group that includes the fire detector 14 that detected the fire is determined, and then the individual fire detectors included in the determined group are polled by specifying addresses in order, and fire responses such as fire alarm data are received. As a result, the address of the fire sensor 14 that detected the fire is recognized, and a fire alarm operation is performed to indicate the location of the fire.

FIG. 4(B) shows a fire alarm system in the middle of renewal in which the existing receiver 10 was replaced with a new receiver 100. The new receiver 100 includes a receiver control section 116, a transmission section 118, an operation display section 120, An alarm section 122, a relay section 124, and a link storage section 126 are provided. With this replacement with the new receiver 100, the interlock control information 28 stored in the storage section 26 of the existing receiver 10 is read out as is and stored as a copy in the storage section 126 of the new receiver 100.

The receiver control unit 116 of the new receiver 100 is provided with the function of a transmission time measurement unit 30, and the transmission time measurement unit 30 transmits the communication test signal shown in steps S2 and S3 in FIG. The first transmission time is measured by receiving the response signal from the first transmission time, and the first correspondence information 32, which is a pair of the address and the first transmission time, is generated.

(Measurement of the second transmission time of the new fire detector using the new receiver)
Subsequently, in step S4 of FIG. 2, as shown in FIG. 1(C), the existing fire detector 14 is replaced with a new fire detector 114, and the signal between The device is in an operating state in which transmission and reception are possible.

Next, the process proceeds to step S5 in FIG. 2, where the new receiver 100 transmits a communication test signal specifying the serial number of the new fire detector 114, and receives a response signal from the new fire detector 114 whose serial number matches. Upon reception, the second transmission time is measured, and second correspondence information, which is a pair of the serial number and the second transmission time, is generated and stored.

The measurement of the second transmission time for each new fire detector 114 by the new receiver 100 also involves transmitting the communication test signal multiple times and storing the average value of the measured transmission time as the second transmission time. Therefore, it is possible to obtain a measurement result of the second transmission time with high accuracy by reducing the influence of noise and variations caused by the noise.

FIG. 3 shows the second correspondence information 34 generated by the process of step S5 in FIG. The second correspondence information 34 stores second transmission times ST1 to ST255 measured in correspondence with the serial number set at the manufacturing stage of the new fire detector 114.

Here, it is necessary to set all the serial numbers of the new fire detector 114 used for measuring the second transmission time in the new receiver 100 in advance. For a predetermined period including the manufacturing period of the new fire detector 114 connected, for example, the serial number for one month of the same type of fire detector manufactured in the same month is set as is, and the new fire detector 114 connected to the transmission line 12 is set as it is. There is no longer a need to find out and set the serial number of the sensor 114 in advance.

In the second correspondence information 34 in FIG. 3, for example, the serial numbers 1000000001 to 1000010000 for 10,000 units used in the manufacturing month of the new fire detector 114 are set as they are, and a communication test in which serial numbers are specified sequentially is set. Since only the new fire detectors 114 that are actually connected to the transmission line 12 receive a response signal in response to the signal, for example, only the 255 units with serial numbers 1000000006 to 1000000260 receive the second transmission time ST1 to ST255 has been measured.

FIG. 5(A) shows the functional configuration of the fire alarm equipment in which the existing fire detector 10 was replaced with the new fire detector 114 in step S4 of FIG. The transmission time measurement section 30 measures the second transmission time by transmitting the communication test signal shown in step S5 in FIG. 2 and receiving the response signal from the new fire detector 114, and calculates the serial number and the second transmission time. The second correspondence information 34 that is a set of is generated.

(Generation of third correspondence information based on transmission time match determination)
Next, the process proceeds to step S6 in FIG. 2, and the new receiver 100 determines whether the first transmission time of the stored first correspondence information 32 and the second transmission time of the second correspondence information 34 match, and in step S7. If the times match, the process proceeds to step S8, where third correspondence information consisting of a pair of address and serial number is generated and stored, and this is repeated until all addresses are completed in step S10.

FIG. 3 shows the third correspondence information 38 generated by the time coincidence determination unit 36 based on the first correspondence information 32 and the second correspondence information 34 through the process of step S8 in FIG. For example, the time coincidence determination unit 36 first reads out the first transmission time FT1 at address 001 of the first correspondence information 32, sequentially compares it with the second transmission times ST1 to ST255 stored in the second correspondence information 34, and The matched set of serial numbers 1000000006 is stored as third correspondence information, and the same time matching determination process is repeated for the remaining addresses.

FIG. 5B shows a functional configuration in which the receiver control section 116 of the new receiver 100 is provided with a time coincidence determination section 36. Based on the coincidence determination between the first transmission time and the second transmission time shown in , third correspondence information 38 consisting of a pair of address and serial number is generated.

(Time mismatch processing)
As shown in FIG. 2, when it is determined that the first transmission time and the second transmission time match in steps S6 to S8 and S10, a time mismatch may be determined in step S7, and a time mismatch may be determined. If so, the address is stored as unset address information in step S9. An unset address is an address that cannot be correlated with the serial number of the new fire detector 114.

Regarding the unset address information generated in step S9, if its existence is determined in step S11, the process proceeds to step S12, in which the lowest time value of the first transmission time and the second transmission time is subjected to predetermined fraction processing, for example, rounded off. Then, check the time match again.

For example, if the first transmission time is 5,019 microseconds and the second transmission time is 5,023 microseconds, the first time matching determination will result in a mismatch, but if the lowest digit is rounded off in step S12, the first transmission time and the second transmission time will differ. The times are 5020 microseconds and match, and the third correspondence information, which is a pair of address and serial number, can be generated.

By performing predetermined rounding on the lowest time value of the first transmission time and the second transmission time, it is possible to reduce the number of unset addresses.

(Determination of address duplication)
Subsequently, the process proceeds to step S13 in FIG. 2, and the new receiver 100 performs the third correspondence information 38 consisting of the address and serial number pair generated in step S8 and added in step S13 to the same serial number. On the other hand, if there are a plurality of sets generated with different addresses, it is determined that the addresses are duplicated, and the addresses of each set are stored as unset addresses in the unset address information generated in step S9.

(Address setting of new fire detector based on 3rd response information)
Next, the process proceeds to step S14 in FIG. 2, and the new receiver 100 sets each set of serial numbers as the destination and sets the address as the setting information based on the third correspondence information 38 consisting of a set of an address and a serial number. A setting signal is transmitted to the transmission line 12, and the new fire detector 114 whose serial numbers match is caused to perform an address setting operation to set the received address as setting information.

FIG. 5(B) shows a functional configuration in which the address setting section 40 is provided in the receiver control section 116 of the new receiver 100. Based on the information 38, by transmitting an address setting signal with each set of serial numbers as the destination and the address as setting information, an address setting operation is performed to set an address in the new fire detector 114 whose serial number matches. can be set.

Therefore, it is no longer necessary to use an address setting device or the like to set the address of the replaced new fire detector 114 while checking the correspondence between the installation location and the address. Setting work becomes simple and easy, and work burden and cost can be reduced.

(Artificial address setting operation based on unset address information)
Next, the process proceeds to step S15 in FIG. 2, and if there is unset address information, the unset address is notified by a predetermined operation on the receiver display or by printer output, so a new address corresponding to the unset address is notified. The installation location of the fire detector 114 is investigated, and the address is manually set using an address setting device or the like.

However, since the proportion of unset addresses to all addresses is sufficiently low, the number of new fire detectors 114 that require manual address setting will not increase so much, and the work burden of address setting will be significantly reduced. Can be reduced.

[Function of new fire detector]
FIG. 6 is a block diagram showing the functional configuration of the new fire detector that supports address setting by the new receiver.

As shown in FIG. 6, the new fire detector 114 is provided with a filter section 130, a constant voltage circuit section 132, a detector control section 134, a sensor section 136, an alarm indicator light 138, and a transmission section 140. The sensor section 136 is a smoke detection section or a temperature detection section, and outputs a smoke concentration detection signal and a temperature detection signal.

The sensor control unit 134 is a computer circuit equipped with a CPU, memory, and various input/output ports, and responds by sampling the signal from the sensor unit 136 according to the batch AD conversion command sent from the receiver, and also issues a fire alarm. In addition to the sensor's original function of determining fire and issuing a fire interrupt, the functions of a communication test response section 42 and an address setting section 44 are provided.

The communication test response unit 42 receives the communication test signal transmitted from the new receiver 100 and transmits a response signal when it determines that the communication test signal matches its own serial number. When the address setting unit 44 receives an address setting signal from the new receiver 100 and determines that it matches its own serial number, it sets the address included in the address setting signal as setting information as its own address.

Further, the sensor control unit 134 blinks the alarm indicator 138 every time it receives a polling signal specifying its own address transmitted from the new receiver 100 and transmits sampling data as a response signal.

Therefore, when setting an unset address in step S15 in FIG. Setting operations can be performed.

[Modification of the present invention]
(Renewal of transmission line)
In the above embodiment, the existing transmission line is used as it is, but if the existing transmission line can be replaced, the transmission line may also be replaced with a new transmission line. In this case, the measurement of the first transmission time for the existing fire detector and the measurement of the second transmission time for the new fire detector are performed using the existing transmission line, and the measurement of the first and second transmission times is performed using the existing transmission line. Once completed, the transmission line is replaced with a new transmission line, and then an address is set for the new fire detector based on the third correspondence information consisting of a pair of address and serial number.

(terminal equipment)
The above embodiment takes as an example the renewal of fire alarm equipment in which a fire detector is connected to which a unique address is set on the transmission path from the receiver; Even when a terminal is connected or a control terminal with a unique address is connected, you can renew it using the same procedure as for fire detectors, so that you can use an address setting device etc. on the replaced terminal. This eliminates the need to set addresses while checking the correspondence between installation locations and addresses, making the work of setting terminal addresses simple and easy in fire alarm equipment renewal work, and reducing the work burden and cost.

(others)
Further, the present invention includes appropriate modifications without impairing its objects and advantages, and is not limited by the numerical values shown in the above embodiments.

10: Receiver 12: Transmission line 14: Fire detector 16, 116: Receiver control section 18, 118, 140: Transmission section 28: Interlocking control information 30: Transmission time measurement section 32: First correspondence information 34: Second Correspondence information 36: Time coincidence determination section 38: Third correspondence information 40, 44: Address setting section 42: Communication test response section 100: New receiver 114: New fire detector 134: Detector control section 138: Alarm indicator light

Claims (1)

A receiver and a fire detector set with a unique address are connected via a transmission line, and the receiver, fire detector, and transmission line are updated to a new receiver, a new fire detector, and a new transmission line. A method for renewing fire alarm equipment,
After updating the receiver to the new receiver, transmitting a communication test signal specifying the address from the new receiver to the transmission path and receiving a response signal from the fire detector for which an address match has been obtained. measuring the first transmission time, and generating and storing first correspondence information that is a pair of the address and the first transmission time;
After updating the fire detector to the new fire detector, a communication test signal specifying the serial number of the new fire detector is sent from the new receiver to the transmission path, and a serial number match is obtained. receiving a response signal from a new fire detector and measuring a second transmission time, and generating and storing second correspondence information that is a set of the serial number and the second transmission time;
generating and storing third correspondence information consisting of a pair of the address and the serial number in which the first transmission time and the second transmission time match, based on the first correspondence information and the second correspondence information;
After updating the transmission path to the new transmission path, the new receiver sends an address setting signal to the new receiver based on the third correspondence information, with the serial number of each set as the destination and the address as the setting information. transmitting the information to a transmission line, and causing the new fire detector for which a serial number match is obtained to set the received address as the setting information;
A method for renewing fire alarm equipment characterized by the following.

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